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Diffstat (limited to 'sys/i386/include/xen/hypercall.h')
-rw-r--r-- | sys/i386/include/xen/hypercall.h | 405 |
1 files changed, 405 insertions, 0 deletions
diff --git a/sys/i386/include/xen/hypercall.h b/sys/i386/include/xen/hypercall.h new file mode 100644 index 0000000..b33626f --- /dev/null +++ b/sys/i386/include/xen/hypercall.h @@ -0,0 +1,405 @@ +/****************************************************************************** + * hypercall.h + * + * Linux-specific hypervisor handling. + * + * Copyright (c) 2002-2004, K A Fraser + * + * This file may be distributed separately from the Linux kernel, or + * incorporated into other software packages, subject to the following license: + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this source file (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, copy, modify, + * merge, publish, distribute, sublicense, and/or sell copies of the Software, + * and to permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + */ + +#ifndef __HYPERCALL_H__ +#define __HYPERCALL_H__ + +#include <sys/systm.h> +#include <xen/interface/xen.h> +#include <xen/interface/sched.h> + +#define __STR(x) #x +#define STR(x) __STR(x) +#define ENOXENSYS 38 +#define CONFIG_XEN_COMPAT 0x030002 + + +#if defined(XEN) +#define HYPERCALL_STR(name) \ + "call hypercall_page + ("STR(__HYPERVISOR_##name)" * 32)" +#else +#define HYPERCALL_STR(name) \ + "mov hypercall_stubs,%%eax; " \ + "add $("STR(__HYPERVISOR_##name)" * 32),%%eax; " \ + "call *%%eax" +#endif + +#define _hypercall0(type, name) \ +({ \ + long __res; \ + __asm__ volatile ( \ + HYPERCALL_STR(name) \ + : "=a" (__res) \ + : \ + : "memory" ); \ + (type)__res; \ +}) + +#define _hypercall1(type, name, a1) \ +({ \ + long __res, __ign1; \ + __asm__ volatile ( \ + HYPERCALL_STR(name) \ + : "=a" (__res), "=b" (__ign1) \ + : "1" ((long)(a1)) \ + : "memory" ); \ + (type)__res; \ +}) + +#define _hypercall2(type, name, a1, a2) \ +({ \ + long __res, __ign1, __ign2; \ + __asm__ volatile ( \ + HYPERCALL_STR(name) \ + : "=a" (__res), "=b" (__ign1), "=c" (__ign2) \ + : "1" ((long)(a1)), "2" ((long)(a2)) \ + : "memory" ); \ + (type)__res; \ +}) + +#define _hypercall3(type, name, a1, a2, a3) \ +({ \ + long __res, __ign1, __ign2, __ign3; \ + __asm__ volatile ( \ + HYPERCALL_STR(name) \ + : "=a" (__res), "=b" (__ign1), "=c" (__ign2), \ + "=d" (__ign3) \ + : "1" ((long)(a1)), "2" ((long)(a2)), \ + "3" ((long)(a3)) \ + : "memory" ); \ + (type)__res; \ +}) + +#define _hypercall4(type, name, a1, a2, a3, a4) \ +({ \ + long __res, __ign1, __ign2, __ign3, __ign4; \ + __asm__ volatile ( \ + HYPERCALL_STR(name) \ + : "=a" (__res), "=b" (__ign1), "=c" (__ign2), \ + "=d" (__ign3), "=S" (__ign4) \ + : "1" ((long)(a1)), "2" ((long)(a2)), \ + "3" ((long)(a3)), "4" ((long)(a4)) \ + : "memory" ); \ + (type)__res; \ +}) + +#define _hypercall5(type, name, a1, a2, a3, a4, a5) \ +({ \ + long __res, __ign1, __ign2, __ign3, __ign4, __ign5; \ + __asm__ volatile ( \ + HYPERCALL_STR(name) \ + : "=a" (__res), "=b" (__ign1), "=c" (__ign2), \ + "=d" (__ign3), "=S" (__ign4), "=D" (__ign5) \ + : "1" ((long)(a1)), "2" ((long)(a2)), \ + "3" ((long)(a3)), "4" ((long)(a4)), \ + "5" ((long)(a5)) \ + : "memory" ); \ + (type)__res; \ +}) + +static inline int +HYPERVISOR_set_trap_table( + trap_info_t *table) +{ + return _hypercall1(int, set_trap_table, table); +} + +static inline int +HYPERVISOR_mmu_update( + mmu_update_t *req, int count, int *success_count, domid_t domid) +{ + return _hypercall4(int, mmu_update, req, count, success_count, domid); +} + +static inline int +HYPERVISOR_mmuext_op( + mmuext_op_t *op, int count, int *success_count, domid_t domid) +{ + return _hypercall4(int, mmuext_op, op, count, success_count, domid); +} + +static inline int +HYPERVISOR_set_gdt( + unsigned long *frame_list, int entries) +{ + return _hypercall2(int, set_gdt, frame_list, entries); +} + +static inline int +HYPERVISOR_stack_switch( + unsigned long ss, unsigned long esp) +{ + return _hypercall2(int, stack_switch, ss, esp); +} + +static inline int +HYPERVISOR_set_callbacks( + unsigned long event_selector, unsigned long event_address, + unsigned long failsafe_selector, unsigned long failsafe_address) +{ + return _hypercall4(int, set_callbacks, + event_selector, event_address, + failsafe_selector, failsafe_address); +} + +static inline int +HYPERVISOR_fpu_taskswitch( + int set) +{ + return _hypercall1(int, fpu_taskswitch, set); +} + +static inline int +HYPERVISOR_sched_op_compat( + int cmd, unsigned long arg) +{ + return _hypercall2(int, sched_op_compat, cmd, arg); +} + +static inline int +HYPERVISOR_sched_op( + int cmd, void *arg) +{ + return _hypercall2(int, sched_op, cmd, arg); +} + +static inline long +HYPERVISOR_set_timer_op( + uint64_t timeout) +{ + unsigned long timeout_hi = (unsigned long)(timeout>>32); + unsigned long timeout_lo = (unsigned long)timeout; + return _hypercall2(long, set_timer_op, timeout_lo, timeout_hi); +} +#if 0 +static inline int +HYPERVISOR_platform_op( + struct xen_platform_op *platform_op) +{ + platform_op->interface_version = XENPF_INTERFACE_VERSION; + return _hypercall1(int, platform_op, platform_op); +} +#endif +static inline int +HYPERVISOR_set_debugreg( + int reg, unsigned long value) +{ + return _hypercall2(int, set_debugreg, reg, value); +} + +static inline unsigned long +HYPERVISOR_get_debugreg( + int reg) +{ + return _hypercall1(unsigned long, get_debugreg, reg); +} + +static inline int +HYPERVISOR_update_descriptor( + uint64_t ma, uint64_t desc) +{ + return _hypercall4(int, update_descriptor, ma, ma>>32, desc, desc>>32); +} + +static inline int +HYPERVISOR_memory_op( + unsigned int cmd, void *arg) +{ + return _hypercall2(int, memory_op, cmd, arg); +} + +static inline int +HYPERVISOR_multicall( + void *call_list, int nr_calls) +{ + return _hypercall2(int, multicall, call_list, nr_calls); +} + +static inline int +HYPERVISOR_update_va_mapping( + unsigned long va, uint64_t new_val, unsigned long flags) +{ + uint32_t hi, lo; + + lo = (uint32_t)(new_val & 0xffffffff); + hi = (uint32_t)(new_val >> 32); + + return _hypercall4(int, update_va_mapping, va, + lo, hi, flags); +} + +static inline int +HYPERVISOR_event_channel_op( + int cmd, void *arg) +{ + int rc = _hypercall2(int, event_channel_op, cmd, arg); + +#if CONFIG_XEN_COMPAT <= 0x030002 + if (__predict_false(rc == -ENOXENSYS)) { + struct evtchn_op op; + op.cmd = cmd; + memcpy(&op.u, arg, sizeof(op.u)); + rc = _hypercall1(int, event_channel_op_compat, &op); + memcpy(arg, &op.u, sizeof(op.u)); + } +#endif + return (rc); +} + +static inline int +HYPERVISOR_xen_version( + int cmd, void *arg) +{ + return _hypercall2(int, xen_version, cmd, arg); +} + +static inline int +HYPERVISOR_console_io( + int cmd, int count, char *str) +{ + return _hypercall3(int, console_io, cmd, count, str); +} + +static inline int +HYPERVISOR_physdev_op( + int cmd, void *arg) +{ + int rc = _hypercall2(int, physdev_op, cmd, arg); +#if CONFIG_XEN_COMPAT <= 0x030002 + if (__predict_false(rc == -ENOXENSYS)) { + struct physdev_op op; + op.cmd = cmd; + memcpy(&op.u, arg, sizeof(op.u)); + rc = _hypercall1(int, physdev_op_compat, &op); + memcpy(arg, &op.u, sizeof(op.u)); + } +#endif + return (rc); +} + +static inline int +HYPERVISOR_grant_table_op( + unsigned int cmd, void *uop, unsigned int count) +{ + return _hypercall3(int, grant_table_op, cmd, uop, count); +} + +static inline int +HYPERVISOR_update_va_mapping_otherdomain( + unsigned long va, uint64_t new_val, unsigned long flags, domid_t domid) +{ + uint32_t hi, lo; + + lo = (uint32_t)(new_val & 0xffffffff); + hi = (uint32_t)(new_val >> 32); + + return _hypercall5(int, update_va_mapping_otherdomain, va, + lo, hi, flags, domid); +} + +static inline int +HYPERVISOR_vm_assist( + unsigned int cmd, unsigned int type) +{ + return _hypercall2(int, vm_assist, cmd, type); +} + +static inline int +HYPERVISOR_vcpu_op( + int cmd, int vcpuid, void *extra_args) +{ + return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args); +} + +static inline int +HYPERVISOR_suspend( + unsigned long srec) +{ + struct sched_shutdown sched_shutdown = { + .reason = SHUTDOWN_suspend + }; + int rc = _hypercall3(int, sched_op, SCHEDOP_shutdown, + &sched_shutdown, srec); +#if CONFIG_XEN_COMPAT <= 0x030002 + if (rc == -ENOXENSYS) + rc = _hypercall3(int, sched_op_compat, SCHEDOP_shutdown, + SHUTDOWN_suspend, srec); +#endif + return (rc); +} + +#if CONFIG_XEN_COMPAT <= 0x030002 +static inline int +HYPERVISOR_nmi_op( + unsigned long op, void *arg) +{ + return _hypercall2(int, nmi_op, op, arg); +} +#endif + +static inline int +HYPERVISOR_callback_op( + int cmd, void *arg) +{ + return _hypercall2(int, callback_op, cmd, arg); +} + +#ifndef CONFIG_XEN +static inline unsigned long +HYPERVISOR_hvm_op( + int op, void *arg) +{ + return _hypercall2(unsigned long, hvm_op, op, arg); +} +#endif + +static inline int +HYPERVISOR_xenoprof_op( + int op, void *arg) +{ + return _hypercall2(int, xenoprof_op, op, arg); +} + +static inline int +HYPERVISOR_kexec_op( + unsigned long op, void *args) +{ + return _hypercall2(int, kexec_op, op, args); +} +#endif /* __HYPERCALL_H__ */ + +/* + * Local variables: + * c-file-style: "linux" + * indent-tabs-mode: t + * c-indent-level: 8 + * c-basic-offset: 8 + * tab-width: 8 + * End: + */ |